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Serology in dengue

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https://www.readbyqxmd.com/read/27905634/-serological-evidence-of-leptospira-spp-dengue-hantavirus-and-arenavirus-infection-in-embera-kat%C3%A3-o-indigenous-population-colombia
#1
Berta Restrepo, Juan D Rodas, Carolina Montoya-Ruiz, Angélica M Zuluaga, Gabriel Parra-Henao, Piedad Agudelo-Flórez
We have developed a study in the Embera-Katío indigenous community and we found that the seropositivity for IgG antibodies to Leptospira spp. was 18.1%; to dengue was 61.1%; to arenavirus was 3.1% and to hantavirus was 1.5%. We conclude that this indigenous community live in conditions that promote the reemerging and emerging, infections.
August 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/27894268/differentiating-secondary-from-primary-dengue-using-igg-to-igm-ratio-in-early-dengue-an-observational-hospital-based-clinico-serological-study-from-north-india
#2
Khalid Hamid Changal, Ab Hameed Raina, Adnan Raina, Manzoor Raina, Rehana Bashir, Muzamil Latief, Tanveer Mir, Qayum Hamid Changal
BACKGROUND: Secondary dengue causes more severe disease than the primary. Early on, it is important to differentiate the two. We tried to find important clinical and laboratory differences between the two for the purpose of early differentiation. METHODS: One hundred fourteen patients confirmed on reverse transcriptase-polymerase chain reaction (RT PCR) were studied. On day 2 of illness IgM and IgG indices were studied for calculation of IgG/IgM ratio. A one-step immunochromatographic assay was used for classification of patients into primary and secondary dengue...
November 28, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27876005/a-predictive-model-to-differentiate-dengue-from-other-febrile-illness
#3
Eduardo Fernández, Marek Smieja, Stephen D Walter, Mark Loeb
BACKGROUND: Dengue is a major public health problem in tropical and subtropical countries and has a presentation similar to other febrile illnesses. Since laboratory confirmation is frequently delayed, the majority of dengue cases are diagnosed based on symptoms. The objective of this study was to identify clinical, hematological and demographical parameters that could be used as predictors of dengue fever among patients with febrile illness. METHODS: We conducted a retrospective cohort study of 548 patients presenting with febrile syndrome to the largest public hospitals in Honduras...
November 22, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27869981/description-of-the-first-cases-of-zika-virus-fever-investigated-in-municipalities-of-the-brazilian-northeastern-region-2015
#4
Francieli Fontana Sutile Tardetti Fantinato, Emerson Luiz Lima Araújo, Igor Gonçalves Ribeiro, Marcia Regina de Andrade, Anna Livia de Medeiros Dantas, Jakeline Maria Trinta Rios, Odila Márcia Vinhas da Silva, Maria do Socorro da Silva, Renata Valeria Nóbrega, Daniel de Araújo Batista, Priscila Leal E Leite, Eduardo Saad, Jadher Percio, Elionardo Andrade Resende, Priscila Bochi de Souza, Marcelo Yoshito Wada
OBJECTIVE: to confirm Zika virus circulation and discard other etiological agents in an outbreak occurred in the states of Rio Grande do Norte, Maranhão and Paraíba, in May, 2015. METHODS: this is a case series descriptive study with residents in Natal-RN, Barra do Corda-MA, São Luis-MA and João Pessoa-PB, with 20 cases in each state, presenting rash, absent or mild fever and one of the following signs/symptoms: conjunctival hyperemia, arthralgia or limb edema; RT-PCR/isolation tests for Zika, enterovirus and respiratory viruses, and serology tests (dengue, rubella and parvovirus B19) were performed...
October 2016: Epidemiologia e Servicos de Saude: Revista do Sistema Unico de Saude do Brasil
https://www.readbyqxmd.com/read/27862008/zika-virus-global-health-challenge-threat-and-current-situation
#5
REVIEW
Hafsa Aziz, Aadarash Zia, Amania Anwer, Muneeba Aziz, Shazia Fatima, Muhammad Faheem
ZIKV has emerged as grave global health issue in the past few years. ZIKV was firstly isolated in 1947 from a rhesus sentinel monkey in the Zika forest in Uganda. It is usually transmitted by the bite of infected mosquitoes and infects skin fibroblasts, skin keratinocytes etc. ZIKV until now was under reported because of its clinical similarity with the dengue and chikungunya. It usually spread through the course of the sylvatic cycle. In this cycle, the virus or pathogen lifespan is spent between the wild animal and vectors...
November 10, 2016: Journal of Medical Virology
https://www.readbyqxmd.com/read/27834908/epitope-identification-and-application-for-diagnosis-of-duck-tembusu-virus-infections-in-ducks
#6
Chenxi Li, Junyan Liu, Wulin Shaozhou, Xiaofei Bai, Qingshan Zhang, Ronghong Hua, Jyung-Hurng Liu, Ming Liu, Yun Zhang
Duck Tembusu virus (DTMUV) causes substantial egg drop disease. DTMUV was first identified in China and rapidly spread to Malaysia and Thailand. The antigenicity of the DTMUV E protein has not yet been characterized. Here, we investigated antigenic sites on the E protein using the non-neutralizing monoclonal antibodies (mAbs) 1F3 and 1A5. Two minimal epitopes were mapped to (221)LD/NLPW(225) and (87)YAEYI(91) by using phage display and mutagenesis. DTMUV-positive duck sera reacted with the epitopes, thus indicating the importance of the minimal amino acids of the epitopes for antibody-epitope binding...
November 10, 2016: Viruses
https://www.readbyqxmd.com/read/27821884/measuring-haitian-children-s-exposure-to-chikungunya-dengue-and-malaria
#7
Mathieu Jp Poirier, Delynn M Moss, Karla R Feeser, Thomas G Streit, Gwong-Jen J Chang, Matthew Whitney, Brandy J Russell, Barbara W Johnson, Alison J Basile, Christin H Goodman, Amanda K Barry, Patrick J Lammie
OBJECTIVE: To differentiate exposure to the newly introduced chikungunya virus from exposure to endemic dengue virus and other pathogens in Haiti. METHODS: We used a multiplex bead assay to detect immunoglobulin G (IgG) responses to a recombinant chikungunya virus antigen, two dengue virus-like particles and three recombinant Plasmodium falciparum antigens. Most (217) of the blood samples investigated were collected longitudinally, from each of 61 children, between 2011 and 2014 but another 127 were collected from a cross-sectional sample of children in 2014...
November 1, 2016: Bulletin of the World Health Organization
https://www.readbyqxmd.com/read/27812650/antibodies-for-rickettsia-spp-in-patients-with-negative-serology-for-dengue-virus-leptospirosis-and-meningococcal-disease-in-municipalities-of-s%C3%A3-o-paulo-state-brazil
#8
Juliana Anacleto Cabral Prata, Celso Eduardo de Souza, Rodrigo Nogueira Angerami, Taíse Marongio Cotrim de Moraes Barbosa, Fabiana Cristina Pereira Dos Santos, Silvia Colombo, Vânia Martins Fontes Del Guercio, Maria Rita Donalísio
INTRODUCTION: Brazilian spotted fever is an infectious disease with a high mortality rate if not treated early. Differential diagnosis is difficult, as the first clinical signs are non-specific and can be confused with other diseases. The aim of the study was to investigate evidence of infection with Rickettsia rickettsii and Rickettsia parkeri in negative sera samples, collected in 2014, from patients with suspected leptospirosis, dengue fever, and meningococcal disease in Atibaia and Bragança Paulista municipalities of the State of São Paulo...
September 2016: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/27812357/emergence-and-spreading-potential-of-zika-virus
#9
REVIEW
Álvaro Fajardo, Juan Cristina, Pilar Moreno
Zika virus (ZIKV) is an arthropod-borne Flavivirus (family Flaviviridae) closely related to dengue, yellow fever and West Nile viruses. ZIKV remained neglected, confined to enzootic transmission cycles in Africa and Asia, until the first significant outbreak was reported in Micronesia in 2007. Subsequent epidemics of growing incidence occurred in French Polynesia and other South Pacific Islands, and recently, in the Americas. The latter and currently ongoing outbreak of unprecedented incidence revealed the association of ZIKV infection with the occurrence of severe congenital malformations and neurological diseases, leading to a widespread concern about its potential to pose a global public health threat...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27796143/the-mechanistic-role-of-antibodies-to-dengue-virus-in-protection-and-disease-pathogenesis
#10
Esther Shuyi Gan, Donald Heng Rong Ting, Kuan Rong Chan
Dengue is a prevalent disease in tropical and subtropical countries with an estimated 400 million people infected annually. While significant advancement has been made in the chase for an effective dengue vaccine, the recently licensed Sanofi vaccine was, in contrast to in vitro data, only partially protective. Areas covered: This suggests that our understanding of the serological correlates for dengue is currently inadequate. With growing evidence supporting the role of fragment crystalizable gamma receptors (FcγRs) in antibody-mediated neutralization or antibody-dependent enhancement (ADE) of dengue virus (DENV) infection, FcγR-expressing cells have been increasingly used for measuring neutralizing antibody responses elicited by dengue vaccines...
October 31, 2016: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/27766801/dengue-outbreak-2012-geo-mapping-and-snapshot-of-clinical-course-from-a-tertiary-referral-center-in-south-india
#11
Ganesh Veerasekar, Krishnan Swaminathan
BACKGROUND: Using technology to track endemic areas of communicable diseases is possible nowadays. Effectual use of such facilities, especially in developing countries, will increase earlier detection of cases as well as aid in the formulation of effective prevention strategies. METHODS: A retrospective data analysis was carried out by collecting the details of patients presented with positive dengue serology, during the outbreak season in the second half of 2012, at Kovai Medical Center and Hospital, Coimbatore, India...
October 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27763787/laboratory-diagnosis-of-zika-virus-infection
#12
Marie Louise Landry, Kirsten St George
CONTEXT: -The rapid and accurate diagnosis of Zika virus infection is an international priority. OBJECTIVE: -To review current recommendations, methods, limitations, and priorities for Zika virus testing. DATA SOURCES: -Sources include published literature, public health recommendations, laboratory procedures, and testing experience. CONCLUSIONS: -Until recently, the laboratory diagnosis of Zika infection was confined to public health or research laboratories that prepared their own reagents, and test capacity has been limited...
October 20, 2016: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/27763483/the-mysterious-zika-virus-adding-to-the-tropical-flavivirus-mayhem
#13
B Mishra, B Behera
Until now, known as the demure cousin of dengue virus (DENV) inhabiting Africa, Zika virus (ZIKV) has reinvented itself to cause explosive epidemics captivating the Western hemisphere. The outbreak causing potential for ZIKV was realized when it made its way from Africa to Yap Island Micronesia in 2007, and in French Polynesia in 2013. From there, it moved on to Brazil in 2015. Now ZIKV has infected people in more than 33 countries in Central and South America and the Caribbean. Moreover the epidemiological and subsequent virological association with microcephaly cases in Brazil has prompted the World Health Organization to declare a public health emergency of International Concern...
October 2016: Journal of Postgraduate Medicine
https://www.readbyqxmd.com/read/27762126/dengue-encephalitis
#14
Jasmine Porwal, Ajay Chauhan
Dengue infection accompanied by unusual complications and manifestations has been described before. Here we report a case of dengue encephalitis who was IgM positive for dengue serology and had presented to us with only motor weakness after an acute febrile episode. Dengue presenting as encephalitis is in itself a very rare feature and that too, pure motor weakness has hardly ever been reported before.
August 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27759344/expanded-dengue
#15
REVIEW
D B Kadam, Sonali Salvi, Ajay Chandanwale
The World Health Organization (WHO) has coined the term expanded dengue to describe cases which do not fall into either dengue shock syndrome or dengue hemorrhagic fever. This has incorporated several atypical findings of dengue. Dengue virus has not been enlisted as a common etiological agent in several conditions like encephalitis, Guillain Barre syndrome. Moreover it is a great mimic of co-existing epidemics like Malaria, Chikungunya and Zika virus disease, which are also mosquito-borne diseases. The atypical manifestations noted in dengue can be mutisystemic and multifacetal...
July 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27735146/a-study-on-the-cardiac-manifestations-of-dengue
#16
S Sheetal, Elizabeth Jacob
OBJECTIVE: This study was done to study the prevalence of cardiac manifestations of dengue fever in patients presenting to our hospital and to find out the correlation of cardiac manifestations to warning signs of dengue and severe dengue. METHODS: The study was conducted at Sree Gokulam Medical College and Research Foundation, which is a tertiary care hospital, in the Department of Medicine in the month of July 2013. One hundred consecutive patients aged 13 years or more with positive dengue serology were interviewed and examined...
May 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27728423/correlation-of-clinical-profile-with-different-serological-diagnostic-parameters-in-dengue-fever
#17
Rohit Morlawar, V A Kothiwale, Veena Munnavali
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27695958/dengue-scenario-chennai-perspective-a-six-year-study-2009-2014
#18
P Padmapriya, V Senthil Kumar, R Senthil Raja, A Khaleefathullah Sheriff, T S Uma, S Mohana, Kavita Arunagiri, A Anupama, N Saran, R Kiruba, K Saravana Murali, B V Suresh Babu, N Nivas Chakravarthy, K Saraswathi, K Kaveri, P Gunasekaran
Dengue is a public health problem with an increasing global incidence and geographic distribution in almost all tropical and subtropical countries, with a transition from epidemic to endemic occurrence. In this study, we report a six-year analysis (2009-2014) performed at the Department of Virology, King Institute of Preventive Medicine, Chennai, Tamil Nadu, India. Our data confirm earlier findings that dengue is highly endemic in Chennai. In the present study, 10,099 serum samples from suspected dengue cases were tested for IgM ELISA (NIV Capture) and IgG Panbio ELISA (Australia)...
September 30, 2016: Archives of Virology
https://www.readbyqxmd.com/read/27684886/local-mosquito-borne-transmission-of-zika-virus-miami-dade-and-broward-counties-florida-june-august-2016
#19
Anna Likos, Isabel Griffin, Andrea M Bingham, Danielle Stanek, Marc Fischer, Stephen White, Janet Hamilton, Leah Eisenstein, David Atrubin, Prakash Mulay, Blake Scott, Patrick Jenkins, Danielle Fernandez, Edhelene Rico, Leah Gillis, Reynald Jean, Marshall Cone, Carina Blackmore, Janet McAllister, Chalmers Vasquez, Lillian Rivera, Celeste Philip
During the first 6 months of 2016, large outbreaks of Zika virus disease caused by local mosquito-borne transmission occurred in Puerto Rico and other U.S. territories, but local mosquito-borne transmission was not identified in the continental United States (1,2). As of July 22, 2016, the Florida Department of Health had identified 321 Zika virus disease cases among Florida residents and visitors, all occurring in either travelers from other countries or territories with ongoing Zika virus transmission or sexual contacts of recent travelers...
2016: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/27681546/clinico-laboratory-profile-of-dengue-patients-returning-from-tropical-areas-to-poland-during-2010-15
#20
A Kuna, M Bykowska, N Kulawiak, B Biernat, B Szostakowska, W L Nahorski, W Pawlowski, L Chomicz
BACKGROUND & OBJECTIVES: Dengue is a mosquito-borne viral disease, incidences of which have increased rapidly in the past decade. About 400 million new infections are recorded annually worldwide, and 40% of the human population lives in the areas at risk of dengue transmission. In this study, the clinical and laboratory profile of dengue diagnosed patients returning to Poland from tropical areas has been analyzed. METHODS: This is a retrospective study of 65 patients based on clinical symptoms and serological tests conducted in the Department of Tropical Parasitology of Institute of Maritime and Tropical Medicine (IMTM) in Gdynia, Poland during 2010-15...
July 2016: Journal of Vector Borne Diseases
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